[Discussion] What is the purpose of having the silver from mobs npc reduced all the time?

seem if not once every year, two to three time the silver drops of npc mobs are reduced. What good does do to reducing silver and not increasing it does for the game in general? basically the over all silver drop in the game has reduced by 300% with in 2 years and 800% with in the last 5 years. There has been no increase in silver per npc in the game so who has the explanation in that.

Simple answer is , we are a copy of a game that allows silver to be used for ALL item mall . So it must be harder and every update we are given lazy version of localized content .
In the past this issue was always adjusted but now the game is very old so less is being done .